Update try signature

Author: rayan-mazouz

README.md

@@ -1049,7 +1049,7 @@ Note that these are pseudo instructions enabling Binaryen to reason about multip
 
 #### [Exception handling operations](https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md) 🦄
 
-* Module#**try**(name: `string`, body: `ExpressionRef`, catchTags: `string[]`, catchBodies: `ExpressionRef[]`, delegateTarget?: `string`): `ExpressionRef`
+* Module#**try**(name: `string | null`, body: `ExpressionRef`, catchTags: `string[]`, catchBodies: `ExpressionRef[]`, delegateTarget?: `string`): `ExpressionRef`
 * Module#**throw**(tag: `string`, operands: `ExpressionRef[]`): `ExpressionRef`
 * Module#**rethrow**(target: `string`): `ExpressionRef`
 >

index.d.ts

@@ -1711,7 +1711,7 @@ declare module binaryen {
       getBody(func: FunctionRef): ExpressionRef;
       setBody(func: FunctionRef, bodyExpr: ExpressionRef): void;
     };
-    try(name: string, body: ExpressionRef, catchTags: string[], catchBodies: ExpressionRef[], delegateTarget?: string): ExpressionRef;
+    try(name: string | null, body: ExpressionRef, catchTags: string[], catchBodies: ExpressionRef[], delegateTarget?: string): ExpressionRef;
     throw(tag: string, operands: ExpressionRef[]): ExpressionRef;
     rethrow(target: string): ExpressionRef;
     select(condition: ExpressionRef, ifTrue: ExpressionRef, ifFalse: ExpressionRef): ExpressionRef;